Comments from MikeH

Brown owned a second “Fly-In Drive-In” which was located just west of the Manahawkin Drive-In on Rt. 72 in Manahawkin. If you stood at the back (last ramp) of the Manahawkin and walked about 100' into the surrounding pine trees you came on the last ramp of the Fly-In.
It was called “Fly-In Drive-In #2” It’s entrance was off of Rt. 72 about a quarter mile from the entrance of the Manahawkin’s entrance.
The Manahawkin was at the intersection of Rt. 72 and Rt. 9.
Brown also owned another drive-in (not a fly-in) called the Bay Drive-In which was located on the north side of Rt. 37 a few miles east of Toms River and very close to the bridge that took you over to Seaside Heights. The Bay was sold to Walter Reade who operated it into the 60s or 70s.
Mike H